#include <stdio.h>
#define MONTHS 12
int main() {
    int days[MONTHS] = {31,28,31,30,31,30,31,31,30,31,30,31};
    int index;
    for ( index = 0; index < MONTHS; index++) {
        printf("Month %2d has %d days.\n",index + 1,*(days +index)); //与days[index]相同
    }
    return 0;
}
